Fix tests based on coverity reports (#819)

* Partial #818, unused arg

* Partial #818, init var

* partail #818, fix va_args usage

* partail #818, handle f* calls and avoid possible call to malloc with negative values

* partail #818, prevent double free

* partail #818, resource leak if test fail

* partail #818, null deref fix

* partail #818, avoid double free on fp failure

* Partial #818, fix error msg

* Partial #818, leak on error

* Partial #818, null deref

* Partial #818, avoid possible negative index on failure

* partial #818, does not free if we return if requested new size overflow

* partial #818, avoid double free, free where the alloc happened

1 files changed, 3 insertions, 3 deletions

diff --git a/src/gd.c b/src/gd.c
index d78504e..95aeabb 100644
--- a/src/gd.c
+++ b/src/gd.c
@@ -3831,12 +3831,12 @@ static void gdImageSetAAPixelColor(gdImagePtr im, int x, int y, int color, int t
  */
 BGD_DECLARE(void) gdImageSetStyle (gdImagePtr im, int *style, int noOfPixels)
 {
-	if (im->style) {
-		gdFree (im->style);
-	}
 	if (overflow2(sizeof (int), noOfPixels)) {
 		return;
 	}
+	if (im->style) {
+		gdFree (im->style);
+	}
 	im->style = (int *) gdMalloc (sizeof (int) * noOfPixels);
 	if (!im->style) {
 		return;